水(shui)稻(dao)(dao)(dao)恶苗病(bing)(bing)是我区(qu)水(shui)稻(dao)(dao)(dao)上最主要(yao)的种(zhong)(zhong)(zhong)(zhong)传病(bing)(bing)害,由区(qu)农(nong)技(ji)中心(xin)抽样送(song)检(jian)经(jing)(jing)市农(nong)技(ji)中心(xin)检(jian)测,今年(nian)(nian)我区(qu)水(shui)稻(dao)(dao)(dao)主要(yao)种(zhong)(zhong)(zhong)(zhong)植(zhi)品种(zhong)(zhong)(zhong)(zhong)稻(dao)(dao)(dao)种(zhong)(zhong)(zhong)(zhong)恶苗病(bing)𓆏(bing)平均带菌率为(wei)3.6%,最高(gao)8%,带菌率较(jiao)去年(nian)(nian)略低。但鉴(jian)于去年(nian)(nian)田间发病(bing)(bing)普遍,今年(nian)(nian)恶苗病(bing)(bing)仍存(cun)在较(jiao)大流行风(feng)险。稻(dao)(dao)(dao)种(zhong)(zhong)(zhong)(zhong)药剂处理是控制水(shui)稻(dao)(dao)(dao)种(zhong)(zhong)(zhong)(zhong)传病(bing)(bing)害最经(jing)(jing)济有效的措施,为(wei)此希望(wang)各街镇(zhen)及广大种(zhong)(zhong)(zhong)(zhong)植(zhi)户引(yin)起高(gao)度(du)重视,认(ren)真做(zuo)好水(shui)稻(ꩲdao)(dao)(dao)种(zhong)(zhong)(zhong)(zhong)子处理工作,为(wei)今年(nian)(nian)水(shui)稻(dao)(dao)(dao)高(gao)产丰收打下(xia)良好的基础。具体技(ji)术要(yao)求如(ru)下(xia):
一、晒种选种
播前选晴好天气晒(shai)种1~2天,并精(jin𝐆g)选种子(zi),除(chu)去(qu)秕粒(li)病粒(li)、减少菌源,以提高种子(zi)的发芽(ya)势(shi),增强秧(yang)苗抗病能(neng)力。
二(er)、的药剂治理进行(xing)消毒能(neng)力
1、解决形式:
每4kg稻(dao)种(zhong)(zhong)(亩用(yong)(yong)种(zhong)(zh😼ong)量(liang))用(yong)(yong)浸种(zhong)(zhong)药(yao)剂9ml,采用(yong)(yong)二(er)次稀(xi)释(shi)法,先(xian)加(jia)少量(liang)水调成浆(jiang)糊(hu)状,然后再加(jia)清水6kg稀(xi)释(shi),配(pei)成药(yao)液。将选(xuan)过的稻(dao)种(zhong)(zhong)4kg(亩用(yong)(yong)种(zhong)(zhong)量(liang))浸入配(pei)成的药(yao)液中搅(jiao)拌均(jun)匀,以(yi)药(yao)液高出种(zhong)(zhong)子(zi)2-3cm为(wei)宜。(若稻(dao)种(zhong)(zhong)数量(liang)多可按上述相应比例(li)配(pei)制)
2、浸(jin)种时间(jian)(jian)(jian):日平均气温低于20℃,浸(jin)种时间(jian)(jian)(jian)应(ying)为(wei)60小(xiao)(xiao)时,20℃以上,浸(jin)种时间(jian)(jian)(jian)应(ying)在(zai)48小(xiao)(xiao)时左(zuo)右(you),具体根据气温变化掌握好时间(jian)(jian)(jian),但浸(jin)足时间(jia👍n)(jian)(jian)是保证药效的关键。
三、准备项目
1、浸种贮(zhu)罐(guan)用加盖,并(bing)至于背阴背光处。严阻止(zhi)蛇皮袋同时(shi)浸种,免(mian)受危害体验。稻(dao🦩)种清洗后不必须(xu)绿(lv)水冲冼,可同时(shi)沥干催(cui)芽载种。
2、中和剂治理过的(de)花楸树种子(🍷zi),勿与(yu)食品原(yuan)料(liao)、伺料(liao)放(fang)置在一个,不应(ying)喂养禽畜,更(geng)不应(ying)也可(ke)以精加工伺料(liao)或食品原(yuan)料(liao)。
3、使用药(yao)(yao🐼)物后应减少出现药(yao)(yao)液等(deng)真接排进渔塘、虾(xia)塘等(deng)水产品生态养(yang)殖的空(kong)间(jian),减少出现发(fa)生鱼、虾(xia)、蟹死亡视(shi)频。
4、化肥打包废料物不恰随(sui)便丢掉或𝓀自(zi)动应急(ji)处置(zhi),ꩵ适时交给(ji)各(ge)部(bu)化肥打包废料物收(shou)废点。
浸种除甲醛药剂优良品种等详请管理咨询位置植物保护单位部门。